Connected pawns

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Image:chess zhor 26.png
Image:chess zver 26.png a8 b8 c8 d8 e8 f8 g8 h8 Image:chess zver 26.png
a7 b7 c7 d7 e7 f7 g7 h7
a6 b6 c6 d6 e6 f6 g6 h6
a5 pl b5 pl c5 d5 e5 pl f5 g5 h5 pl
a4 b4 c4 pl d4 e4 f4 g4 pl h4
a3 b3 c3 d3 e3 pl f3 g3 h3
a2 b2 c2 d2 e2 f2 g2 h2
a1 b1 c1 d1 e1 f1 g1 h1
Image:chess zhor 26.png
White's pawns on the a, b and, c files are connected, and white's g and h pawns are connected.

In chess, connected pawns are two or more pawns of the same color on adjacent files, as distinct from isolated pawns. These pawns are instrumental in creating pawn structure because, when diagonally adjacent, like the two rightmost white pawns, they form a pawn chain, a chain where the one behind protects the one in front. When attacking these chains, the weak spot is the backmost pawn, because it is not protected (Seirawan 2003:186) (Seirawan 2005:922).

Connected pawns become a major advantage at the endgame because connected pawns offer versatility and support as the line of pawns advance. If the backmost pawn of a pawn chain is well-defended, it becomes almost impossible to prevent a pawn from queening without loss of material. Because of this property, minor pieces may be sacrificed for passed connected pawns during games, especially if backed with rooks.

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